Abstract
The molecular based magnet Csl[Nincrm(cN)6]" 2H20 is a ferromagnet with a Curie temperature Tc = 90 K. Its
structure consists of face centered cubic lattice of Ni n ions connected by Cr(CN)6 entities. We have recorded X-ray
Magnetic Circular Dichroism (XMCD) at the L2.3 edges of Ni n. Through Crystal Field Multiplet calculation we have
determined the total magnetic moment carried by the Ni n. By using sum rules derived for XMCD, it has been possible to
extract orbital and spin contributions to the total magnetic moment. A somewhat too small magnetic moment is found
on nickel. A complete calculation taking into account the multiplet coupling effect and the covalent hybridization
allowed to determine the precise ground state of nickel and showed that hybridization with surrounding nitrogen atoms
is not responsible for the experimental low nickel magnetic moment.
Original language | English |
---|---|
Journal | Physica. B, condensed matter |
Publication status | Published - 1995 |